EP2047779B2 - Coffee machine - Google Patents

Coffee machine Download PDF

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Publication number
EP2047779B2
EP2047779B2 EP08020408.4A EP08020408A EP2047779B2 EP 2047779 B2 EP2047779 B2 EP 2047779B2 EP 08020408 A EP08020408 A EP 08020408A EP 2047779 B2 EP2047779 B2 EP 2047779B2
Authority
EP
European Patent Office
Prior art keywords
milk
coffee machine
container
dispenser
steam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08020408.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2047779A1 (en
EP2047779B1 (en
Inventor
Giancarlo Marconi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
De Longhi SpA
Original Assignee
De Longhi SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by De Longhi SpA filed Critical De Longhi SpA
Priority to PL08020408T priority Critical patent/PL2047779T5/pl
Publication of EP2047779A1 publication Critical patent/EP2047779A1/en
Publication of EP2047779B1 publication Critical patent/EP2047779B1/en
Application granted granted Critical
Publication of EP2047779B2 publication Critical patent/EP2047779B2/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/4485—Nozzles dispensing heated and foamed milk, i.e. milk is sucked from a milk container, heated and foamed inside the device, and subsequently dispensed from the nozzle
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/60—Cleaning devices

Definitions

  • the present invention refers to a coffee machine having a device for producing a milk-based drink, in particular to a cappuccino, but more generally also to a coffee and milk drink without froth, or furthermore to a drink of just hot milk with or without froth.
  • Such apparatuses also do not have a system for cleaning the inner parts or have one that is not very effective so as to gradually bring about a deterioration of performance.
  • the quality of the emulsion can often be penalised by the configuration and/or structural and/or functional characteristics of such conventional apparatuses.
  • the influence that the mixing operation of the milk with the air and the steam addition operation have upon each other, due to the fact that they are carried out in the same area, can have a negative influence upon the quality of the emulsion.
  • a coffee machine with a venturi element and an external milk container connected thereto are known from EP-A- 0791321 and WO01/26520A .
  • the technical task proposed of the present invention is, therefore, that of making a coffee machine having a device for producing a milk-based drink that allows the aforementioned technical drawbacks of the prior art to be eliminated.
  • a purpose of the invention is that of making a coffee machine having a device for producing a milk-based drink that is versatile and extremely easy to use.
  • a further purpose of the present invention is that of providing a coffee machine having a device for producing a milk-based drink that is easy to inspect and accessible in all of its parts.
  • Another purpose of the invention is that of providing a coffee machine having a device for producing a milk-based drink that has a system for cleaning the inner parts that is extremely effective so as to keep a high standard of performance.
  • Another purpose of the present invention is that of providing a coffee machine having an effective device for producing a milk-based drink such as to ensure that the drink always has the desired organoleptic characteristics.
  • the last but not least purpose of the present invention is that of providing a process for producing a cappuccino suitable for automatically carrying out both the brewing of coffee and the frothing of milk with a single command.
  • a device for producing a milk-based drink is shown, wholly indicated with reference numeral 1.
  • the device 1 comprises a steam or hot water dispenser 5 and a container 2 for the milk that directly or indirectly carries a collector body 3 removably associated with the dispenser 5.
  • the collector body 3 internally defines a recess 300 into which a connection pathway 401 to the dispenser 5, a suction pathway 7 of the milk present in the container 2 and an air suction pathway 10 open.
  • the collector body 3 is carried by a cover 26 of the container 2, and according fo the invention, as illustrated, is formed integrally with it.
  • the collector body 3 extends in a position outside and at the apex of a first side wall 14 of the container 2.
  • the steam or hot water dispenser 5 is that belonging to a coffee machine 6.
  • the collector body 3 also has a discharge 8 from the recess 300, to which a discharge nozzle 9 can be removably fitted.
  • the discharge nozzle 9 is rotatably connected to the discharge 8 of the collector body 3, between a rest position adjacent to the first side wall 14 of the container 2 and a work position distant from it.
  • the discharge nozzle 9 has its rotation axis arranged on the extension of the dispenser 5.
  • the discharge nozzle 9 also has a manual grip 15 for moving from rest position to work position and vice-versa.
  • the container 2 has a substantially quadrangular shape in plan, with a grip 18 at a second side wall 19 perpendicular to the axial extension of the steam or hot water dispenser 5, and a lip 20 formed in a third side wall 21 of the container 2 opposite the side wall 19.
  • the pouring lip 20 is suitable for pouring the milk when the device 1 is not connected to the coffee machine 6.
  • the container 2 can also be used independently to conserve milk in the refrigerator so as to make cold milk immediately available to the customer.
  • the container 2 has a pocket 22 formed outside of the first side wall 14 of the container 2 and below the discharge nozzle 9 to collect possible leakages of drops of liquid when the discharge nozzle 9 is in rest position.
  • the container 2 also has a substantially vertical supply channel of the milk from the bottom of the container 2 to the suction pathway 7 of the collector body 3, also formed outside the first side wall 14 of the container 2.
  • the suction pathway 7 has a portion connected with the milk supply channel 23.
  • the device 1 also has a flexible tube 25 that extends axially inside the milk supply channel 23 and projects at one end towards the bottom of the container 2 and at the other end inside the fitting portion 24 of the suction pathway 7.
  • the collector body 3, the milk supply channel 23, the discharge nozzle 9 and the collection pocket 22 are arranged in a recess of the first side wall of the container 2 to limit the overall bulk of the device 1.
  • the device 1 can comprise at least first scraping means 402 suitable for carrying out a cleaning scrape of the inner surface of the air suction pathway 10.
  • the pathway 4 and the discharge pathway 8 are arranged in parallel along the main axis of the collector body 3, whereas the milk inlet pathway 7 and the air inlet pathway 10 are arranged transversally to the main axis of the collector body 3 and diametrically opposite.
  • the flows from the pathways 7 and 10 and from the dispenser 5 mix in a single solution in the mixing chamber defined by the free portion of the recess 300 defined by the dispenser 5.
  • the recess 300 has a convergent portion 11, suitable for creating a Venturi effect that determines the sucking up of milk from the container 2 when it is crossed by the flow of steam.
  • the scraping means for cleaning the inner surface of the pathway 10 are actuated by a manually controlled leverism 27 pivoted directly on the cover 26.
  • the leverism 27 comprises a lever 28 that can be operated perpendicular to the lying plane of the cover 26 and having a first lever arm 29 carrying a scraping finger 30 of the third pathway 10 and a second lever arm 31 arranged in a guide pivoted on the cover 26 and rotatable parallel to the lying plane of the cover 26.
  • the guide 32 has a guide plane that is inclined with respect to the lying plane of the cover 26 so that a rotation in one direction and, respectively, in the opposite direction commands the lowering and raising, respectively, of the first lever arm 31 and consequently the extraction and introduction, respectively, of the scraping finger 30 into/from the pathway 10.
  • the control of the leverism 27 is carried out manually through an ear 33 integral with the guide 32.
  • the process for producing a cappuccino is briefly the following.
  • the coffee machine 6 has a keypad 34 having at least one button for commanding the production of a cappuccino and buttons for activating the functions of steam and water production to be sent to the dispenser 5.
  • the device 1 is associated with the coffee machine by introducing the dispenser 5 into the inlet pathway 4, and then the button for activating the steam function is pressed.
  • the control unit of the coffee machine automatically commands the preparation of a dose of brewed coffee in a cup positioned in a zone below the dispenser group of the coffee machine, the withdrawal of a predetermined amount of milk contained in the container 2 through the action of a steam flow sent by the dispenser 5 and the consequent controlled frothing of the milk through the effect of the air entering through the inlet pathway 10 of the collecting chamber 3, the interruption of the flow of steam when the predetermined amount of milk has been withdrawn, and the final conveying of the milk into the cup thanks to the discharge nozzle directed towards the zone below the dispenser group, for it to be mixed with the brewed coffee.
  • the coffee machine through a suitable command, can also command the production of an exclusively frothed milk-based drink. In this case the same procedure described above is repeated eliminating the first step of producing a dose of brewed coffee in the cup.
  • the dispenser 5 can once again have its nozzle 35 with which it was originally equipped connected.
  • a cappuccino can be produced with the more conventional method, pressing the buttons for activating the steam production function, or else hot water can be produced for the preparation of a tea-based or other brew, pressing the buttons for activating the hot water production.
  • FIG. 9 a preferred embodiment of the hot water production circuit and of the steam production circuit is illustrated, which are both supplied by an electropump 166 controlled by a flowmeter 167 and suitable for withdrawing water from a reservoir 168.
  • the hot water circuit comprises a first boiler 158 (suitable for producing hot water) connected through a first valve (not shown) to the brewing chamber of the coffee machine.
  • the steam circuit extends from the first boiler 158 through a second electrovalve 159 having three pathways 160, 161 and 162 that puts the first boiler 158 in communication with a discharge line 163 and with a second boiler 164 for producing steam in turn connected to the steam dispenser 5 through a third electrovalve 165.
  • the first valve is open, whereas the second and third electrovalve 159 and 165 remain closed and the electropump 166 is actuated until the flowmeter 167 has measured the passage into the first boiler 158 of a predetermined volume of water to make the brewed coffee.
  • the first valve closes whereas the second electrovalve 159 opens the pathways 160 and 161 and keeps the pathway 162 of the discharge line closed, the third electrovalve 165 opens, and the electropump 166 is actuated until the flowmeter 167 has measured the passage into the second boiler 164 of a predetermined volume of water to make the steam necessary to froth the milk.
  • the first and second boiler are selectively activated, possibly intermittently, and thus the water destined for the second boiler is not necessarily preheated in the first boiler.
  • the opening of the electrovalve 165 is delayed with respect to the starting of the electropump 166 so as to generate pressurised steam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)
  • Dairy Products (AREA)
  • Tea And Coffee (AREA)
EP08020408.4A 2004-04-21 2005-04-08 Coffee machine Active EP2047779B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08020408T PL2047779T5 (pl) 2004-04-21 2005-04-08 Ekspres do kawy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000777A ITMI20040777A1 (it) 2004-04-21 2004-04-21 Dispositivo e procedimento per la produzione di una bevanda a base di latte
EP05755458A EP1725151B1 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP05755458A Division EP1725151B1 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink

Publications (3)

Publication Number Publication Date
EP2047779A1 EP2047779A1 (en) 2009-04-15
EP2047779B1 EP2047779B1 (en) 2009-08-26
EP2047779B2 true EP2047779B2 (en) 2017-11-29

Family

ID=34971311

Family Applications (5)

Application Number Title Priority Date Filing Date
EP08020408.4A Active EP2047779B2 (en) 2004-04-21 2005-04-08 Coffee machine
EP05755458A Active EP1725151B1 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink
EP08020407A Not-in-force EP2047778B1 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink
EP09008307.2A Active EP2098145B2 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink
EP09014048A Not-in-force EP2153759B1 (en) 2004-04-21 2005-04-08 Device for producing a milk based drink

Family Applications After (4)

Application Number Title Priority Date Filing Date
EP05755458A Active EP1725151B1 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink
EP08020407A Not-in-force EP2047778B1 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink
EP09008307.2A Active EP2098145B2 (en) 2004-04-21 2005-04-08 Device for producing a milk-based drink
EP09014048A Not-in-force EP2153759B1 (en) 2004-04-21 2005-04-08 Device for producing a milk based drink

Country Status (15)

Country Link
US (1) US7946219B2 (it)
EP (5) EP2047779B2 (it)
JP (1) JP4774042B2 (it)
CN (1) CN100592888C (it)
AT (7) ATE457149T2 (it)
AU (1) AU2005235411B2 (it)
CA (1) CA2563753C (it)
DE (6) DE202005021777U1 (it)
DK (2) DK2047779T4 (it)
ES (2) ES2328088T5 (it)
IT (1) ITMI20040777A1 (it)
PL (5) PL2098145T5 (it)
PT (2) PT2047779E (it)
RU (1) RU2339289C2 (it)
WO (1) WO2005102126A2 (it)

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EP3505024A1 (en) 2017-12-29 2019-07-03 Koninklijke Philips N.V. A drinks machine with hot water and steam delivery and a method of use
RU185076U1 (ru) * 2018-06-27 2018-11-20 Общество с ограниченной ответственностью "ПОЛАРИС ИНТЕРНЕЙШНЛ ЛИМИТЕД" Сборно-разборная паровая трубка для кофемашины
IT202000008128A1 (it) 2020-04-16 2021-10-16 De Longhi Appliances Srl Macchina da caffè
IT202200009536A1 (it) * 2022-05-09 2023-11-09 De Longhi Appliances Srl Dispositivo per montare il latte
JP7428291B1 (ja) 2023-07-03 2024-02-06 富士電機株式会社 飲料供給装置

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DK2098145T4 (en) 2018-04-23
AT11057U2 (de) 2010-04-15
WO2005102126A3 (en) 2006-03-23
PL2153759T3 (pl) 2012-05-31
EP1725151B1 (en) 2010-04-14
PL2047779T3 (pl) 2009-12-31
EP2153759B1 (en) 2011-12-14
RU2006140997A (ru) 2008-05-27
PL381032A1 (pl) 2007-04-16
DK2098145T3 (da) 2010-05-25
ATE457670T1 (de) 2010-03-15
CA2563753A1 (en) 2005-11-03
DK2047779T4 (en) 2018-01-08
EP2098145B1 (en) 2010-02-10
PT2098145E (pt) 2010-03-24
ATE457149T2 (de) 2010-02-15
EP2098145B2 (en) 2018-01-10
RU2339289C2 (ru) 2008-11-27
PL2098145T5 (pl) 2018-06-29
AU2005235411A1 (en) 2005-11-03
PL2047779T5 (pl) 2018-05-30
JP2007533382A (ja) 2007-11-22
US20070243305A1 (en) 2007-10-18
US7946219B2 (en) 2011-05-24
WO2005102126A2 (en) 2005-11-03
DE602005019488D1 (de) 2010-04-01
DK2047779T3 (da) 2009-10-05
ES2341152T3 (es) 2010-06-15
ES2328088T3 (es) 2009-11-06
AT10885U3 (de) 2010-12-15
EP2153759A3 (en) 2010-03-17
EP2047778A1 (en) 2009-04-15
EP2047779A1 (en) 2009-04-15
DE602005016323D1 (de) 2009-10-08
ES2328088T5 (es) 2018-02-14
ES2341152T5 (es) 2018-03-19
EP2047778B1 (en) 2010-02-17
CN100592888C (zh) 2010-03-03
PL1725151T3 (pl) 2010-09-30
EP2098145A1 (en) 2009-09-09
DE602005020596D1 (de) 2010-05-27
CN1968632A (zh) 2007-05-23
DE202005021777U1 (de) 2009-12-03
ITMI20040777A1 (it) 2004-07-21
CA2563753C (en) 2010-02-02
PT2047779E (pt) 2009-09-03
AT10885U2 (de) 2009-12-15
ATE440531T2 (de) 2009-09-15
EP2047779B1 (en) 2009-08-26
EP2153759A2 (en) 2010-02-17
PL2098145T3 (pl) 2010-06-30
DE202005021734U1 (de) 2009-08-13
EP1725151A2 (en) 2006-11-29
ATE463988T1 (de) 2010-04-15
JP4774042B2 (ja) 2011-09-14
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DE602005019340D1 (de) 2010-03-25
AU2005235411B2 (en) 2011-02-03

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